I wasn't finding any hobby knife holders for the Honeycomb Storage Wall. While at my desk I was using a Sharpie and noticed it was about the same diameter as the Fiskars hobby knife. I took Akinayr's Sharpie holder and removed all but 1 of the spots, relocated the HSW attachment and my Fiskars hobby knife fits remarkably well in it.
Printed on default X1C settings in about 26 minutes.